package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

/*
*  分类业务层
* */
@Service
public class CategoryServiceImpl implements CategoryService {

    @Autowired
    private CategoryMapper categoryMapper;

    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private SetmealMapper setmealMapper;
    /*
    *  新增分类
    * */
    @Override
    public void save(CategoryDTO categoryDTO) {
        Category category = new Category();
        //属性拷贝
        BeanUtils.copyProperties(categoryDTO,category);
        //分类状态默认为禁用状态0
        category.setStatus(StatusConstant.DISABLE);
        //设置创建时间，修改时间，创建人，修改人
        //category.setCreateTime(LocalDateTime.now());
        category.setUpdateTime(LocalDateTime.now());

        //category.setCreateUser(BaseContext.getCurrentId());
       //category.setUpdateUser(BaseContext.getCurrentId());

        categoryMapper.insert(category);

    }

    /*
    *  分页查询
    * */
    @Override
    public PageResult pageQuery(CategoryPageQueryDTO categoryPageQueryDTO) {
        //开启分页查询
        PageHelper.startPage(categoryPageQueryDTO.getPage(),categoryPageQueryDTO.getPageSize());
        Page<Category> page = categoryMapper.pageQuery(categoryPageQueryDTO);
        return new PageResult(page.getTotal(),page.getResult());
    }

    /*
    *  根据id删除分类
    * */
    @Override
    public void deletyById(Long id){
        //查询当前分类是否关联了菜品，如果关联了就抛出业务异常
        Integer count = dishMapper.countByCategoryId(id);
        if(count>0){
            //当前分类下有菜品，不能删除
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }

        //查询当前分类是否关联了套餐，如果关联了就抛出业务异常
        count = setmealMapper.countByCategoryId(id);
        if(count>0){
            //当前分类下有套餐，不能删除
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }
        //删除分类数据
        categoryMapper.deletById(id);
    }

    /*
    *  修改分类
    * */
    @Override
    public void update(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO,category);

        //设置修改时间，修改人
        //category.setUpdateTime(LocalDateTime.now());
        //category.setUpdateUser(BaseContext.getCurrentId());

        categoryMapper.update(category);

    }

    /*
    *  启用禁用分类
    * */
    @Override
    public void startOrStop(Integer status, Long id) {
        Category category = Category.builder()
                .status(status)
                .id(id)
                //.updateTime(LocalDateTime.now())
                //.updateUser(BaseContext.getCurrentId())
                .build();

        categoryMapper.update(category);
    }

    /*
    *  根据类型查询分类
    * */
    @Override
    public List<Category> list(Integer type) {
        return categoryMapper.list(type);
    }
}
